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28826033 = 1713712377
BaseRepresentation
bin110110111110…
…1100110110001
32000020111212212
41231331212301
524334413113
62505501505
7500005625
oct155754661
960214785
1028826033
11152a9475
1297a1895
135c83832
143b85185
1527e60a8
hex1b7d9b1

28826033 has 8 divisors (see below), whose sum is σ = 30746952. Its totient is φ = 26930176.

The previous prime is 28826027. The next prime is 28826041. The reversal of 28826033 is 33062882.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3655744 + 25170289 = 1912^2 + 5017^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28826033 - 212 = 28821937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28826053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3860 + ... + 8517.

It is an arithmetic number, because the mean of its divisors is an integer number (3843369).

Almost surely, 228826033 is an apocalyptic number.

It is an amenable number.

28826033 is a deficient number, since it is larger than the sum of its proper divisors (1920919).

28826033 is a wasteful number, since it uses less digits than its factorization.

28826033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12531.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 28826033 is about 5368.9880797037. The cubic root of 28826033 is about 306.6161031684.

The spelling of 28826033 in words is "twenty-eight million, eight hundred twenty-six thousand, thirty-three".

Divisors: 1 17 137 2329 12377 210409 1695649 28826033